Bobbin-changing mechanism



Feb. 24, 1931. J. LUCAS BOBBIN CHANGING MECHANISM Filed Nov. 21, 4Sheets-Sheet l [N VENTOR J 01W] Tl/A'A/ L was WITNEEE Feb. 24, 1931.

J. LUCAS BOBBIN CHANGING MECHANISM 4 Sheets-Sheet 2 Filed Nov.

WITNESS MMMM /I 1/ T OAHVE VS Feb.'24, 1931. J. LUCAS BOBBIN CHANGINGMECHANISM Filed Nov. 21, I928 4 sheets-sheet a INVENTOR WITNESS %762WWWWm w GR um ,LT NA m L MM J Feb. 24, 1931. J. LUCAS BOBBIN CHANGINGMECHANISM Filed Nov. 21, 1928 4 Sheets-Sheet 4 I I i I I I I I I I I I I1 I I I I I I I I I L a; I i I I I I I I INVEI VTOR A TTORNE YS Q i; IWITNESS Patented Feb. 24, 1931 PATENT OFFICE UNITEDSTATES JON THANLucas, onsAvANnAn, GEORGIA, assrenon T LUCAS-LAMBORN Loom conrona'rronor NEW YORK, n. Y.,' A CORPORATION or NEW YORK solemn-CHANGIN MECHA NISMApplication filed November 21,1928. Serial No. 320,975.

, My invention relates to looms and more particularly to mechanism forperiodically and automatically changingIt-he bobbin with its holderatpredetermined intervals during the operation of the loom in a positiveand uniform manner free from shocks and impacts, the objects andadvantages of which will appear more, fully hereinafter. [In theaccompanying drawings which illustrateby wayiofi example a form of myinvention without defining itslimits, Fig. 1 is a-front'elevationofmyapparatus; Fig. 2 is a vertical section taken along the line 22 ofFig.1; Figs. 3 tolO illustrate the bobbin transfer orchanging mechanisminpvarious progressive positions; Fig. llis a'plan view of theshuttlejand supporting arms, and Fig. 12 is a vertical section online 12-12 of r u t Y i 1 My present invention may in general be employedwith'any type of positive shuttle transfer mechanism such as that disclosedin United States Patent No. 1,624,108 issued to me April 12,1927, orwith that, shown in i the copendinggjoint application of Arthur Gase,anclmyself, Serial No. 287,518, filed June 22,1928, Certain parts oithe shuttle transfer] mechanism disclosed in my above patent andapplication are shown; on, the acco npanying drawings for the sake ,of a

clearer understanding ofmy invention and as shown include {twooppositely reciprocating carriers 15 slidabl-y mounted uponguides 16fired upon the frame 17 of the loom. The carriers 15 are provided withforwardly e V tending arms 18 (Fig, 311) for alternately supporting theshuttle in the manner disclosed in the aboi 'conentioned patentandapplication i Thocarriers may he re ciprocatcd upon their guides inany suitable way and as shown the right hand carrier maybe operated froma srenkw (B sl) xe to h t 1 through linlr20,,oscillating lev andconneetin qdes, which; is pivate to a lug 22 depending from the carrier15. Upon con} tiniious tation of the cr'ank lEl the carrier isreciprocated backhand forth between the side my centefrof the machine,Fig. 1 showing in dotted lii esthefinneiyliinit of travel of thecarrier. wince understood that a second or left-hand carrier 15, similarto therighthandcarrier, is located upon the other side of the machineand is operated in a similar manner by a crank (not shown), whichactuates an oscillating lever 21 connected to the second carrier, so asto move the same toward and away from the center of the machine insynchronism with the righthand carrier, the transfer of the shuttle fromone carrierto the other taking place automatically at theicenter of themachine where said carriers meet, as described in the patent andapplication referred to.

Mounted upon the carrier 15 is a shuttle 23 which is provided withguideways 24 within which the arms 18 of the carrier 15 alternatelyengage so as alternately to support the shuttle in its travel across theloom. It will be sufiicicnt for the purposes of the present disclosureto state that as the carrier 15 approaches the center of the machine theshuttleis released from the arinupon which it is supported and becomeslatched to and supported by the other arm which then carries it to theother side of the machine while the first arm returns idly to its sideof the machine. When the arms again approach the center of the loom theshuttle is re-transferredfrom the second to the first arm and in thismanner the shuttle is positively carried back and forth through the shedof the loom.

lVhen weavingcloth which isto contain filler or; weft threads ofdiiicrent colors or of difierentfqualities it bccomesuiecessary tochange the bobbin Awhich isfcontainerl in thcshuttlc atcertainpredetermined instants;

I accomplish this, change bymcaus of aspecially constructed slu ttlcwhich is employed inassociationj with novel mechanism for removing theportion of the shuttle within which the bobbin is mounted, which portionI shall hereinafterrefer to as the bobbin box, andsimultaneouslysubstituting for such box a similar box containing abobbin havingthreads of different colors or qualities ,from saidfirstmentioned bobbin. M

Themechanism about to be described is one of numerous forms which myinvention may" take, and has been designed to replace periodically andin rotation one of two rej displace the second inturn upon return theshuttle.

movable bobbin-holding boxes with the other at every two picks of themachine, one of the boxes being carried bythe shuttle as it passesthrough the shed of the loom and replaced by thaton the platform and isitself automatically positioned on the platform t? 7 Referring to Fig.11, the shuttle 23 as shown includes a frame 24 provided with a cutaway25,within which is adapted to fit a bobbin box 26 which is preferably ofrecf tangular form and open at the top. This cutaway is open both'at thetop and bottom and also along the front side. The bobbin box 26 isprovided with notches oropenings 27 which are adapted to receive springpress'ed latches 28 mounted upon the frame of the shuttle. These latchesserve to hold the box in position upon the shuttle frame during thereciprocation of the shuttle across the loom.

The transfer mechanism, which operates to replace the bobbin box with anew box during the operation of the machine, includes a platform 29hinged to two parallel arms 30, the other ends of said arms beingpivoted upon a fixed portion of the frame of the loom.

. The platform is offset from the carrier'1 longitudinally of the loomand is located belowthe bobbin box when the shuttle has been movedtoward the right-hand end of the machine as viewed in Fig. 1. Theplatform is adapted to be raised vertically and simultaneouslymoved't'oward the right of the machine by means of an arm 31 which isrigidly connected to one of the arms 'and is controlled by'means of acam 32 engaged by a follower 33 fixed upon an oscillating lever 34pivoted at 35 to a bracket 36 attached to the frame of the machine andconnected by means of a link 37 to the arm 31. Upon rotation of the cam32 thelever 34 will be actuated to oscillate the arm 31 and therebyalternately raise and} lower the platform 29;

' ,The' platform 29 is provided with anupstanding bracket 38 upon whichis pivoted a spring pressedlatch39 (Fig. '2), thelatter ha'vinganextension 40 'whic'h is adapted to engage a cam41 fixed upon the frameof the machine. The nah, 391s adapted to engage within an opening 42 inthe side of the bobbin box 26 so as'to 'holdthe same upon the platform.The platform 29, latch some cam .41

are so related that [as the 'platformis raised .upon oscillationj'of thearm 31, the extension 40 rides on cam 41 and the la tch 39is withdrawnfrom the opening 42 so as to release the bobbin box positionedoaths:platform prior to the replacement of the bobbin box posi-' tioned'withintheshu'ttle, as-explaine .m -f fullyfbel'ow. p I j My novel bobbin box"changingviiichafiism I 1,794,-024 I I 5 includes also means forreceiving and holding the replaced or idle box as it is ejected from theshuttle by the box which is positioned upon the platform 29. In theformof the invention illustrated, this receiving and holding meanscomprises a pair of hooks 44 (Fig. 3) which are adapted to enter theopena ing in the top of the bobbin box 26 and engage under flanges 46 asdescribed hereinafter.

frame and at their other ends are pivotally connected to the plate 49asshown at 53. It

will be obvious from the construction so far 54 with link 55, asindicated at 58. The lever" 56 is rocked by means of a cam 58' which isengaged by'a follower 59 mounted upon the lever, the cam 58 beingdesignedto produce the complex movement which is described below inconnection with the operation of the mechanism. 1

The hooks 44, as shownin Fig. 3, pass through openings 59 in the plate49 and are rabbetted at 60 so as to providea stop which engages theplate 49. The hooksare formed on the horizontal arms of a pair ofbell-crank I levers which are pivoted at 47 the vertical arms 61 ofwhich are engaged by springs .62 located in the housings 50st) asto urgethe hooks'44 into the openings 59. Each of the arms 61 is connectedbymeans of'a link to a lever63pivotedintermediate its, ends upon thevertical plate 48 and terminating in acam portion 64. Fixed upon theframe of the machine is an upright 65 while mounted upon the platform 29is a similar upright 66, both of which are ada tedv to be engaged bythe' cams 64 as describedbelow;

The driving mechanism for the carriers and the bobbintransfer mechaismincludes a pulley 67 (Fig.1) or otherdrivenwheel'i mounted onthedriven shaft 1 9; Aspur, gear .68 on the sl me; 19" e gages an idler 69*j'oun nalle'd nponia support attached to the frame of the machine-andmeshingin turn with a on the shaft Z1 whiehcarries l gear 72 and throughthe latter drives the gear 73 mounted upon the shaft 7 4 to which thecam 58' is fixed. .Thecrank 19 and cams32 and 58 are thus rotated in thesame direction.

The left-hand carrier maybe operated in the-same manner as theright-hand carrier and drivenfrom the shaft 19 by means ofa bevel gear.75 fixed to theshaft 19 and engaging a bevel gear 7 6 on a transverseshaft 77;. This latter shaft :can be made to operate afshaftcorresponding to the shaft 19. and

having a crank similar to the crank 19cmnected thereto, the link 20,lever 21and connecting rod 22 being similarlyduplicated.

The operation. of the transfer mechanism above described will be bestnnderstoodaby reference to F igs. 3-to 10 of the drawings. Fig. 3 showsthe shuttle 23 having the bobbin box B latched thereon (as shown in Fig.12) approaching the right-hand end of the machine as viewed in Fig. 1. iThe other box A is at this time positioned upon the platform 29 and heldin proper position by the latch 39 shown in Fig. 2.. The cam 32 is sodesignedthat the lever 34- will be rocked to oscillate the arms inclockwise direction so as to raise the platform 29 beforethe box B inthe shuttle 23hasreached aiposition in vertical alignment with the boxA. i As the shuttle continueslitsmovement to the right, the'bobbin box Ais raised vertically and at the same time movedhorizontally, thehorizontal speed of the platform increasing until theboxes A and B arein exact vertical alignment, from which moment the horizontal 'speedofthe platform 29 and the shuttle 23 is thesame. During its movement theextension iO (Fig. 2) rides over thecam 41 and releases the latch 39from the shuttle 28. As the shuttle continues its movement there willthen be only relative vertical movement between the shuttle and theplatform. i As theboxA rises it willengage and pushthc box B out of theshuttle frame, the latches 28 i being cammed outwardly against theaction of their springs. During this movement of the shuttle andplatform, the parallel arms .51 connected to the plate 49 have beenosciL lated bytherock lever 56 and cam58" in a clockwise directionso asto move the plate 49 vertically and horizontally. The cams 32 i and 58are so formedthat the vertical move- 'ment of platform 29 is morerapidthan-that I 46. After thepa'rtshave reached theposition shown in Figg'5the verticalfspeedof the plate f 49becomeslgrater thanthat oftheplat-form 529 so that the box B whlchisnow supported by thehooks 44 ismoved away from the box Aasthe latter entersthecut-away section in"willbe change theshuttle frame and becomes latched therein, asshown inFig. 6. t

Fig. 6 shows the position of the shuttle at approximately the extremelimit of its righthand movement and after the completion of the bobbintransfer. When this position has been reached or very shortlythereafterthe carrier 15 is reversed through theoperation of the crank 19 and theshuttle. which now has the box A therein proceeds totravel toward thecenter of the machine as indicated bythe arrows in Fig. 7. Before thisreverse movement has occurred, however, the arms 30 have continued theirclockwise movenient until the position indicated in Fig. T

has been reached so as to provide a clearance between the shuttle andthe platform.

At approximately the moment i that the right-halal end of the shuttleclears the lefthaud en d of the platform 2911s shown in Fig. i

of their cam 58 so as to lower the plate 49 and the box B supportedbythe. hooks 44. When the partshavc reached the position shown in Fig.8, the platform 29 is approximately at the position of restshown in Fig.

been more rapid than that ofplatform29 so that the former overtakes thelatter as shown in Figs. 8 and 9. As the box B is lowered the earns 64-on levcrs63 engage the uprights I 65 and 66 respectively, causing thelevers 63 to rock and raise the hooks 44 out of engagement with theflanges 46 as clearly shown in Fig. 9. The box B is thusreleased fromthe hooks and drops onto the platform 29 where it becomes latched by thelatch 39. The platform 29travels further a; very short distance until itreaches its position of rest shown in Fig. 10, while the direction ofoscillation of the arms 51 is again reversed, whereupon the :7

plate 49 is moved away from the platform 29 until thegidle positionshown inIFig. 19 is reached. This Fig. 10 position isnnaintained duringthe time that the shuttle is. transferred'at the center o'i'themachinetroiuthr I j fg'hthand to the lerthand.carrier 15 on whichitis carried to the left-hand end of the machine and then returned to.the center of the machine where it s retransferred to the right-handcarrier 15 and the above described cycle of bobbin box transferoperations is repeated said right hand carrier again approaches itsrighaimlliimit of movement. "Viith the above construction the bobbin ateverytwo picltsof the ma- 1 i chine. It willlie obvious that by properlydesigning the cams and 58 or by inter posing suitable timingmechanism-in the drive of these canister driving them intermittently,the bobbins may be changed at a. The vertical downward movement of the.1 plate 49 (lllllllfl this reverse movement has every four, six oranyhigher even number of picks. Furthermore, a similar bobbin transfermechanism maybe located at the leftside of the machine, in which caseabysuitablyforming and driving the cams, the bobbins fmay be changed atevery pick or at any even or odd numbered pick.

It'willbe clear that with'the above mechanism the bobbins are changed ina uniform V is not subjected to sudden-shocks or strains;

'on the contrary, the engagement of one bob-'- binbox by the other isgradual and free of shock or impact, whereby the Wear and tear on themachine and the noise arematerially diminished.

VVhile I have shown my inventive idea embodied in a mechanism whereinthe bobbin is housed within a bobbin box, which latter is the elementthat is directly transferred, it should be understood that thebobbinsmay fbe so designed as to be capable of being 7 directly transferredorreplaced one by the other without the aidof a bobbin box.

Where in the claims I refer to positive shuttle-transfer mechanism'it isto be understood thatI refer to those types of shuttle transferdeviceswherein the movement of the shuttle through the shed and acrossthe and definite in character, in contra-distinction to those shuttletra'nsfer devices whereby the shuttle is thrown'or shot across the loom,the speed-and trajectoryof the shuttle in such cases not'being fixed orpredictable. 7 .Variations from-the specific form of the invention shownand described may be resorted to Within thescope of the. appended claimswithout departing from the spirit of my invention. Forexample, myimproved mechanism maybe employed as a Weft replenishin'gmechanism,:wherein a spent bobbin is replaced by a new, bobbin, there beingprovidedany suitable form offeeler device. 45.Ic1aim':

1.,Ina'loom, the'combination with a positiveshuttle-transfer mechanism,of a shuttle having'a removable bobbin, means for operating saidmechanism to transfer the shuttle across the shed of theloom,'and bobbinchangand operating during the actuation of said shuttle-transfermechanism by its operating 1 meansfor automatically-replacing the bobbinof said shuttle with another bobbin.

.2. In a loom, thecombinationwith-a posi tive shuttle-transfermechanism, of'a shuttle having a removable jbobbin,means V foroperacross theshed of the loom,- and bobbin i V the loomand'operative-during the actuation of said shuttle-transfer mechanism byits op and positive manner and that the machine loom is under controland'more or less fixeding mechanism located at onesi de of the loom Iating said mechanism to transfer the shuttle"- changing mechanismlocated-at one side, of

eratingmeans for automatically displacing the. bobbin of said shuttlevertically with another bobbin. v

3. In a loom, the combination with a positive shuttle-transfermechanism, of a shuttle having a removable bobbin, means for operatingsaid mechanism totransfer the shuttle across the shed ofthe loom,-and-bobbin changing mechanism located at one side of the loomandoperative during the actuation-of Saidshuttle transfer mechanismby itsoperating means for automatically displacing the bobbin of said shuttleu-pwardlywith another bobbin.

4. In a loom, the combination with a positive shuttle-transfermechanism, of'a shuttle having a removable bobbin, means for operatingsaid mechanism totransfer the shuttle across the shed of-the loom, and amovable support for a second bobbin operative during the actuation. ofsaid shuttle-transfer mechanism by its operating means for movingsaidsecond bobbintoward saidshuttle in a direction having componentsparallel to and at an angle to the direction of movement of saidshuttle,whereby said first bobbin is replaced by the second in a manner freefrom shock and impact. p r

- 5. In a loom, the combination with a positive shuttle-transfermechanism, ofa shuttle having a removable bobbin, a movablesupport for asecond bobbin operative duringthe movement of the shuttle for movingsaid second bobbin toward said shuttle in a direction having componentsparallel to and at an angle to the direction of movement-of saidshuttle, whereby said first bobbin is replaced by the second in a mannerfreefrom shock and im-' act and mechanism for removin said first bobbinfrom the path of said shuttle.

6. In a loom, the combinationwith a positi've'shuttle-transfermechanism, of a shuttle having a removable'bobbin, a movable support fora second bobbin operative during'the movement of the shuttle for movingsaid sec- .ond' bobbin toward'said shuttle in a direction havingcomponents parallel to and at an angle tothe direction of movement ofsaid shuttle whereby said first bobbin is replaced by thesecond in amanner free from shock and'-impact,-';and mechanism for removing" saidfirst box from thepath of said jshuttle,

itive. shuttle-transfer mechanism, ofa' shut e a ng a remo ab e bo b id. bobbin changing mechanism located; at one'side of the loom andvoperative during the movement of said. h tle f automatieall plac thebobbin ofsaid shuttle'withi anetherbob i ai chang g mechanism comprisng-"a bb n ad nc ng-de e. dap ed o hold a travel substantially the samespeed as said shuttle in the direction of the latter and also a relativemovementlat aniangleto said direction whereby gradual displacement ofsaid first by said second bobbin is effected in i a manner free fromshockmand impact, and

operating mechanismforactuating said recelving device to remove saidfirst bobbin from the path ofmovement of said shuttle.

' 8. In a loom, the combination with a positive shuttle-transfermechanism, of a shuttle having a removable bobbin, and bobbin changingmechanism located at one side of the loom and operative during themovement of said shuttle for automatically replacing the'bobbin of saidshuttle with another bobbin; said changing mechanism comprising aplatform adapted to hold a second bobbin thereon, operating mechanismfor imparting to said platform fora portion of its travel substantiallythe same speed as said shuttle in the direction of movement of thelatter and a relative movement at an angle to said direction to effectgradual displacementof the firstby the second bobbin in a manner freefrom shock and impact, bobbin receiving mechanism adapted to receive thedisplaced bobbin, and means for effecting the transfer of said displacedbobbin from said receiving mechanism to said platform, whereby upon asubsequent return of the shuttle said first bobbin will replacethesecond in the body of the shuttle in the manner aforesaid.

:9. In a loom, the combination with a positive shuttle-transfermechanism, of a shuttle having a removable bobbin, and bobbin changlngmechanism located at one side of the loom and operative during themovement of said shuttle for automatically replacing the bobbin of saidshuttle with another bobbin; said changingmechanism comprising aplatform adapted to hold a second bobbin thereon, means including aparallelogram linkage for imparting to said platform for a portion ofits travel substantially the same speed as said shuttle in the directionof movement of thelatter and a relative movement at an angle to saiddirection to effect gradual displacement of the first by the secondbobbin in a manner free from shock and impact, bobbin receivingmechanism adapted to receive the displaced bobbin, and means foreffecting the transfer ofsaid displaced bobbin from said receivingmechanism to said thereon, means for imparting to said lat-a form for aportion of its travel substantlally the same speed as said shuttle inthe direction'of movement of the latter and a relative movement at anangle to said direction to effect gradual displacement of the first bythe second bobbin in a manner free from shock and impact, grippingmechanism located above the path of said shuttle and adapted to removethe displaced bobbin from the path of the shuttle, and means foreffecting the transfer of said displaced bobbin from said grippingmechanism to said platform, whereby u on a subsequent return of theshuttle said rst bobbin will replace the thereon, operating mechanismincluding a parallelogram linkage for imparting to said platform for aportion of its travel substantially the same speed as saidshuttle in thedirection of movement of the latter and a rela tive movement at an angleto said direction to effect gradual displacement of the first by thesecond bobbin in a manner free from shock and impact, gripping mechanismlocated above the path of said shuttle and adapted to remove thedisplaced bobbin from the pathof the shuttle, and operating mechanismincluding a parallelogram linkage connection for said gripping mechanismfor moving the latter toward said platform, and means for releasing saidgripping mechanism whereby said first bobbin is transferred to saidplatform, said platform being adapted to be returned to initial positionwhereby upon a subsequent return of the shuttle said firstbobbin willreplace the second in the body of the shuttle in the manner aforesaid.12. In a loom, the combination with a positiveshuttle-transfermechanism, of a shuttle having a removable bobbin, andbobbin changing mechanism located at one side of the loom and operativeduring the movement tiallythe same speed as-said shuttle in thedirection of movement of the latter and a relative movement at anangle'to said direction to effect gradual displacement of the first'bythe second bobbin in a manner'free from shock and impact, grippingmechanism located above the path of said shuttle and adapted to removethe displaced bobbin from the path of the shuttle, operating mechanismincluding a parallelogram linkage connection for said gripping mechanismfor moving the latter toward said platform, and means for releasing saidgripping mechanism whereby said first bobbin is transferred to saidplatform, said platform being-adapted to be returned to initial positionwhereby upon a subsequent return of the shuttle said first bobbin willreplace thcsecond'in the body of the shuttle in the manner aforesaid,said rel easing means including cam levers associated with said grippingmechanism and means for tripping said levers.

13. Ina loom, the-combination with apositive shuttle-transfer-mechanism,of a shuttle I having a removable bobbin, and bobbin changing mechanismlocated at one side of the 10cm and operative during-the movement 1 ofsaid shuttle for automatically replacing the bobbin of-said shuttle withanother bobbin; said" changing mechanism comprising'a platform adaptedto hold a sec- 0nd bobbin thereon, a latching device on said] platformadapted to position rand-"hold the bobbin on the platform,

operating mechanism for imparting to said platform'for a portion of itstravel substantially the same speedas said shuttle 1n the direction ofmovement of the latter and a rel- I ative movement at an angle tosaid-direction to effect gradual displacement of thefirst by the secondbobbin in a manner free from shock and impact, releasing mechanismoperative during such displacement torelease said second bobbin fromsaid latching device,

bobbin're'ceiving mechanism adapted to re- 7 ceive the displaced bobbin,and means for-effecting the transfer of said displacedbobbin from saidreceiving mechanism tosaid plat- I j form, whereby upon a subsequentreturn of and means for'rele'as'ing said latching mechanism: prior tosuch replacement.

15. .The'method of changing the bobbin of a shuttle having a removablebobbin, which comprises so moving a second bobbinv adjacent the path of:the shuttle, while the latter is being transferred to lay the weft, asto -impart'to such se'cond bobbin substantially the samespeed'asr-said'shuttle in the direction of movement of thela-tter duringsuch transfer anda relative movementat an angle to said direction toeffect gradual displacement of the firstby the second bobbinin a mannerfree from shock andimpact,

16. The method of changing the bobbin of a shuttle having a removablebobbin, which comprises so moving a second bobbin adjacent the pathofthe shuttle, while the latter is being transferred to 'laythe weft, asto impart to suchisecond' bobbin substantially the same speed as saidshuttle in the direction of movement of the latter during such transferand a relative movement in a vertical direction to effect gradualdisplacement of the first by the second bobbin in a manner free fromshock and impact. 1 V 7 17. The method of'changing the bobbin of ashuttle having a removable bobbin during movement of the shuttlewhichcomprises so moving a second bobbin adjacent to the path of the shuttle,while the latter is being transferred to lay the weft, as to impart tosaid second bobbin substantially the same speed as said shuttle in thedirection of movement of the latter during such'transfer and arelativemovementat an angle to said direction to effect gradual displacementof'the first by the second bobbinina manner. free from shock and impact,and removing said first bobbin-from the pathof the shuttle.

I 18. The method of changing the bobbin of a shuttle having aremovablebobbin during movement of the shuttle, which'comprises so :movingasecond bobbin adjacent to the path of the shuttle as to impart'to saidsecond bobbin substantially the samespeed as said shuttle in thedirection of movement of the latter and a relative movement at an angleto said I direction to effect gradual displacement of thefirst by thes'econd bobbinin a manner free fromshock and impact, removing said-fiixst bobbin from the path of the shuttle and transferring the same tothe initial position of said second bobbin, whereby upon a subsequentreturn of the shuttle the first bobbin is in position to replace thesecond in the body ofthe shuttle in the manner aforesaid.

19. In, a loom, the combination with a positive shuttle transfermechanism, of a shuttle having a removable bobbin, and

means for operating said mechanism to transferthe shuttle across theshed of the loom, and bobbin changing mechanism operative during theactuation of said shuttle-transfer mechanism by its operating means forautomatically replacing the bobbin of said shuttle with another bobbin.

-' JONATHAN nUoAs.

TOO

